Pulley.



C. A. BRINLEY.

PULLEY.

APPLICATION FILED MAR. Z. 19H.

1,232,5. Patented July 3, 1917.

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C. A. BRINLEY.

PULLEY.

APPLICATION FILED MAR. 1. 1911.

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TINTTED STATES PATENT OFFTQE.

CHARLES A. BRINLEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE AMERI- CAN PULLEY COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

PULLEY.

Specification of Letters Patent.

Patented July 3, 1917.

Application filed March 7, 1917. Serial No. 152,989.

To all whom it may concern:

Be it known that I, CHARLES A. BRINLEY, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Pulleys, whereof the following is a specification, reference being had to the accompanying drawings.

In the embodiment shown in the drawings the invention is illustrated in connection with a whole pulley, for which use it is espe cially adapted, but it is not necessarily restricted thereto.

In said drawings, Figure I, represents an exterior side elevation of a pulley embodying my improvements.

Fig. II, is a diametrical transverse section on the line II, II, of Fig. I.

Figs. III, and IV, are partial detail sectional views, on the lines III, and IV, respectively of Fig. I, the scale of the parts being enlarged.

In Figs. V, and VI, a modified form of pulley is shown, Fiv. V, being a side elevation, and Fig. VI, a transverse diametrical section on the line VI, VI, of Fig. V.

My invention is peculiarly adapted for embodiment in pulleys constructed mainly of sheet metal, stamped or pressed into shape, and is addressed chiefly to the group of structural parts located at or about the region of the hub. The main objects are to simplify the structure, to afford economy in the manufacture and assemblage of the parts, and to combine lightness and strength.

Referring to the type shown in Figs. I, to IV, inclusive, 1, represents the hub of the pulley, the two extremities of which, 2, and 3, respectively, are cylindrical, the usual axial opening being provided for the shaft, and a key seat 4:, being also employed, if desired.

Adjacent to its longitudinal center, the hub is provided with a projecting boss 5, the middle portion of which may be of polygonal cross-section, and on each side of said middle portion and between it and the end portions 2, and 3, are polygonal shoulders 7, and 8, respectively. Where the pulley is to be provided with six spokes, which number is preferred, the shoulders are hexagonal in outline. Adjacent to the shoulders and on the sides toward the longitudinal center of the hub are peripheral walls 9, and 10, respectively.

18, and 19, and merging together near the inner extremity of the spoke member, as indicated at 20. The respective spoke members are preferably constructed separately from the face-plates and secured thereto in any convenient manner, such as by the use of rivets 21, etc. In the instance shown in Fig. I, a portion of the inner extremities of one spoke member overlaps the next at one edge, as shown at 23. The spoke members of each pair converge together, as indicated by the partial sectional view of Figs. III, and IV, and the outer extremities are secured at 25, to the inwardly turned flanges 27 of the rim portions 28, and 29. The two face-plates carrying their respective groups of spoke members, are secured together, when seated upon the hexagonal shoulders 7, and 8, by means of bolts and nuts 30, 31, provided with distance pieces 32. In this instance three of such securing devices are shown, and by means thereof the face-plates are clamped firmly against the walls 9, and 10, of the hub.

In the alternative form shown in Figs. V, and VI, the hub 50, is provided with the hexagonal shoulders 51, and 52, and walls 53, and 54, adjacent thereto, which are slightly inclined as indicated. The faceplates 55, and 56, when seated upon the shoulders, are inclined in correspondence with the inclination of the walls 53, and 54. The spokes 60, and 61, are attached to the inner sides of the face-plates instead of being mounted upon the outer side, as in the embodiment shown in Fig. I.

The spoke members 60, and 61, are provided with corrugations or dishings 63, which may be of any desired form, but which, in this instance, are not marginal. The inner extremities 65, of the spokes, are beveled at the corners, as shown in dotted lines of Fig. V, so that they fit together Without overlapping. The face-plates and their respective groups of spoke members are clamped together by means of bolts and nuts 67, and 66.

By the use of devices of Which the above are typical instances, the construction is simplified and great economy is attained, since the hub may be cast in any appropriate form, and the shoulders accurately machined there on, at small cost. The sheet metal spoke members and face-plates, can be stamped to shape, so that the manufacture of these parts also is simplified, and the elements are easily assembled.

Having thus described my invention, I desire it to be understood that in my claim I use the term pulley as comprehensive, not only of the article commercially known by that name, but also of Wheels, and similar structures.

I claim:

In a pulley, the combination of a hub, provided With a raised peripheral boss ad- Gopies of this patent may be obtained for five cents each, by

bear against the peripheral Walls; two-part spokes, Whose respective members are rigidly connected at their inner extremities to said face-plates; a rim secured to said spoke members at their outer extremities; and means for clamping the face-plates in position upon the hub shoulders, substantially as shown.

In testimony whereof, I have hereunto signed my name at Augusta Georgia this twenty-eighth day of February 1917.

CHARLES A. BRINLEY.

Witnesses:

KATHARINE BRINLEY, CHARLES B. MARTIN.

Washington, D. G.

addressing the Commissioner of Patents. 

